PITTSBURGH (AP) -Steelers safety Troy Polamalu has returned to practice after sitting out two days with an Achilles' tendon injury and is listed as probable for Sunday's game against Oakland.
Also practicing Friday were defensive end Brett Keisel (hamstring), who has missed nearly all of four games, and linebacker Lawrence Timmons (hip). Keisel is listed as questionable and Timmons is probable.
Left guard Chris Kemoeatu (ankle) also is probable after being held out of the New England game on Sunday. He went through full practices Thursday and Friday.
Safety Will Allen will miss a second successive game with a concussion that occurred against Cincinnati on Nov. 8.